Research Paper Petroleum Engineering
1. An Experimental Study on Evaluation of Factors Influencing the Viscosity and Viscoelastic Properties of Waxy Crude Oil

Yavar Karimi; Ali Reza Solaimany Nazar

Volume 9, Issue 1 , Winter 2020, Pages 1-15

http://dx.doi.org/10.22050/ijogst.2019.194137.1513

Abstract
  The influences of several operating factors on the viscosity of the Isfahan refinery waxy crude oil sample are studied through conducting some rheological shear rotational tests. The Taguchi design method is adopted to determine the impact of factors such as shear rate, temperature, cooling rate, wax ...  Read More

Research Paper Chemical Engineering
2. Investigating the Treatment of Oil and Gas Produced Water Using a Spray Dryer on a Bench Scale

Mohammad Razaghiyan; Mahmood Reza Rahimi; Hajir Karimi

Volume 9, Issue 1 , Winter 2020, Pages 16-32

http://dx.doi.org/10.22050/ijogst.2019.196098.1514

Abstract
  The current work investigates the performance of a single-stage, bench-scale system using a spray dryer to treat produced water. The produced water is generated in three large reservoirs of Ahvaz, Maroon, and Mansouri fields, which have different compositions but the same high total dissolved solids ...  Read More

Research Paper Petroleum Engineering
3. A Novel Approach to Obtaining the Optimum Pressure and Stages of Separators

Ali Moazami Goodarzi; Arman Darvish Sarvestani; Ali Hadipour

Volume 9, Issue 1 , Winter 2020, Pages 33-46

http://dx.doi.org/10.22050/ijogst.2019.153012.1480

Abstract
  Nowadays, the increasing demand for energy in the world is one of the main concerns for energy supply. In fact, the required energy can be obtained by increasing the production rate of fossil fuels such as oil and natural gas. However, improving the efficiency of the equipment and facilities might have ...  Read More

Research Paper Chemical Engineering
4. Nitrogen Adsorption on Molecular Sieve Zeolites: An Experimental and Modeling Study

Erfan Tooraji; Ahad Ghaemi

Volume 9, Issue 1 , Winter 2020, Pages 47-67

http://dx.doi.org/10.22050/ijogst.2019.186102.1506

Abstract
  Separation of nitrogen from a gaseous mixture is required for many industrial processes. In this study, the adsorption of nitrogen on zeolite 4A was investigated in terms of different adsorption isotherm models and kinetics. An increase in the initial pressure from 1 to 9 bar increases the amount of ...  Read More

Research Paper Mechanical Engineering
5. Effect of Surface Roughness on Vortex Length and Efficiency of Gas-oil Cyclones through CFD Modelling

Seyed Masoud Vahedi; Farzad Parvaz; Mohsen Khandan Bakavoli; Mohammad Kamali

Volume 9, Issue 1 , Winter 2020, Pages 68-84

http://dx.doi.org/10.22050/ijogst.2018.102377.1417

Abstract
  Separation of suspended droplets in a fluid flow has been a great concern for scientists and technologists. In the current study, the effect of the surface roughness on flow field and the performance of a gas-oil cyclone is studied numerically. The droplets and the turbulent airflow inside the cyclone ...  Read More

Research Paper Petroleum Engineering
6. Geochemical Characterization of Kazhdumi Source Rock in the Khaviz Oil Field, Southwest of Iran, Using Rock-Eval Pyrolysis

Mehrbod khalatbari; Mohammadreza Kamali; Mehran Arian; Buyuk Ghorbani

Volume 9, Issue 1 , Winter 2020, Pages 85-93

http://dx.doi.org/10.22050/ijogst.2019.187983.1508

Abstract
  The Khaviz oil field located in Dezful embayment is one of Iran’s southwest oil fields. In this study, a total of 28 cutting samples from Kazhdumi formation (well No. KZ1, Khaviz oil field) were subject to geochemical investigation using Rock-Eval pyrolysis for the first time. The results of pyrolysis ...  Read More

Research Paper Petroleum Engineering
7. Selection of an Optimal Hybrid Water/Gas Injection Scenario for Maximization of Oil Recovery Using Genetic Algorithm

Shahin Kord; Omid Ourahmadi; Arman Namaee-Ghasemi

Volume 9, Issue 1 , Winter 2020, Pages 94-111

http://dx.doi.org/10.22050/ijogst.2018.108293.1423

Abstract
  Production strategy from a hydrocarbon reservoir plays an important role in optimal field development in the sense of maximizing oil recovery and economic profits. To this end, self-adapting optimization algorithms are necessary due to the great number of variables and the excessive time required for ...  Read More